London copper prices hit a record high on Wednesday, extending the previous session's 0.7 percent gain, while Shanghai hit its highest in almost four years, lifted by a fall in the dollar and positive US earnings expectations. Shanghai's benchmark third-month copper futures contract gained as much as 850 yuan to 72,850 yuan a tonne.
Aluminium rose $15 to $2,465. A bearish target at $2,404 has been modified to $2,420 per tonne for LME aluminium after it bounced back into the upper channel.